lifeform
Any living creature
A lifeform is any living organism—from bacteria to blue whales, from fungi to humans.
The term appears most often in scientific and science-fiction contexts, where it encompasses forms of life that might differ radically from familiar biology: The probe detected no lifeforms on the planet's surface.
Also spelled as two words: life form.
State of sentient awareness
- intelligenceMental ability, cognitive capacity
- awarenessState of perceiving reality
- cognitionMental knowledge acquisition
- sapienceProfound intellectual discernment
perception · self-awareness · sentient · thinking · feeling · communication · learning · memory
Living biological entity
- cellBasic unit of life
- bacteriaNucleus-free single-celled organisms
- virusMicroscopic infectious agent
- fungusSpore-bearing organism
protozoa · algae · microbe · pathogen · parasite · host · unicellular · multicellular
Finest taxonomic rank
- taxonomyScience of categorical arrangement
- kingdomMonarch's ruled territory
- phylumMajor classification rank
- genusTaxonomic rank above species
flora · fauna · invertebrate · vertebrate · mammal · reptile · amphibian · bird
Interconnected organisms and surroundings
- habitatOrganism's natural environment
- biomeMajor ecological community
- nicheRecessed wall space
- biodiversityRange of life forms
symbiosis · predation · food chain · keystone · endemic · population · community · decomposer
Differential reproductive success
- mutationPermanent DNA alteration
- speciationFormation of distinct species
- DarwinismNatural selection theory
- phylogenyEvolutionary relationships among organisms
ancestry · fossils · divergence · extinction · paleontology · cladistics · common ancestor · adaptation
Being from outer space
- UFOUnidentified aerial craft
- E.T.Extraterrestrial being
- RoswellNew Mexico city, UFO-famous
- Area 51Classified Nevada test facility
first contact · sci-fi · otherworldly · interstellar · spacecraft · starship · abduction · cosmic
consciousness
State of sentient awareness
- intelligenceMental ability, cognitive capacity
- awarenessState of perceiving reality
- cognitionMental knowledge acquisition
sapience · perception · self-awareness · sentient · thinking · feeling · communication · learning · memory · behavior
organism
Living biological entity
fungus · protozoa · algae · microbe · pathogen · parasite · host · unicellular · multicellular · prokaryote
species
Finest taxonomic rank
- taxonomyScience of categorical arrangement
- kingdomMonarch's ruled territory
- phylumMajor classification rank
genus · flora · fauna · invertebrate · vertebrate · mammal · reptile · amphibian · bird · fish
ecosystem
Interconnected organisms and surroundings
biodiversity · symbiosis · predation · food chain · keystone · endemic · population · community · decomposer · producer
natural selection
Differential reproductive success
- mutationPermanent DNA alteration
- speciationFormation of distinct species
- DarwinismNatural selection theory
phylogeny · ancestry · fossils · divergence · extinction · paleontology · cladistics · common ancestor · adaptation · variation
extraterrestrial
Being from outer space
Area 51 · first contact · sci-fi · otherworldly · interstellar · spacecraft · starship · abduction · cosmic · unidentified